Cut-out for mufflers.



G. G. WARD. GUT-OUT PoR MUPPLBBS.

APPLICATION FILED APB. 25, 1910.

' Patented Sept. 3, 1912.

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@gym/ff *3y M UNITED STATES PATENT '()FFI-Cli.'.v

5;.. GEORGE C. WARD, OF ST. L'O'UTS, MIISUURI.

CUT-GUT FOR MUFFLERS.

Speclcation of Letters .Patent. Patented Sept. 3, 1912.

Application iled April 25, 1910. Serial No. 557,391.

To all lwhom t may concem:

Be it known'that I, GEORGE C. WARD, a citizen of the United States, and a resident of the city of St. Louis and State of Missouri, have invented a new and useful Improvement in Cut-Outs for Muliers, of which the following is a specification.

, This invention relates to cut-outs or relief valves for muiilers.

It has for its rincipal objects to produce a simple and e cient valve which can be readily applied to the ordinary exhaust pipe leading from an explosive-engine to a mulier, and to attain certain advantages hereinaftermore fully appearing.

Iam aware that-cut-out valves have been provided for exhaust pipes of internal combustion motors, but the same are usually of the flap or butterfly type; and, owing to the accumulation of carbon around the opening in the pipe, due to the nature of the products of combustion which are discharged therethrough, the valves will not properly close. Furthermore, the construction and arrangements of the devices are usually somewhat complex.

The invention consists in the parts and in the arrangements and combinations of parts nereinafter described and claimed.

In the accompanying drawing which forms part of this specification and wherein like symbols refer to like parts wherever they occur, Figure 1 is a fragmentary side elevation of an exhaust pipe provided with a cut-out valve according to my invention; Fig. 2 is a transverse section on the line 2--2 of Fig. 1, showing the valve closed; and Figf?, is a view similar to Fig. 2 showing the valve open.

In the drawings, a portion of an ordinary exhaust pipe 1 is shown. In practice, thls pipe leads from the exhaust of an internal combustion engine to a muffler, and the arrangements being obvious and subject to numerous variations, the same arenot herein set forth in detail. Rotatably tted on the pipe 1 is a sleeve 2. The sleeve 2 is provided with an opening 3 which is prefi erably rectangular and arranged to register with a similar opening 4 in the pipe 1.

The sleeve 2 may be held against endwise movement on the pi e 1 in any desirable -manner but, preferab y, it is provided with a transverse slot 5 through which a screw or stud 6 is inserted and secured in an opening in the tube 1. By this arrangement, the rotative movement of the sleeve 2 is limited and at the same time, the sleeve is held in proper position onl the tube 1. A suitable manipulating device or lever 7 is secured on the sleeve in any desirable manner and the same may obviously be carried into position convenient to the operator, either direct or through the medium of a systemof connecting rods and levers.

The opposite edge portions 8 of the opening 3 in the sleeve 2 which are parallel with the axis of the sleeve are beveled to a sharp cutting edge on the inner side of the sleeve so that any accumulation of carbon around the edges` of the opening 4' in the pipe 1 is shaved ofi".

Obviously, the device admits of consid erable modification without departing from my inventionband, therefore, I do not wishv to be limited to the specific construction and arrangement shown.

lVhat I claim is:

1. The combination with the exhaust pipe of an internal combustion motor, said pipe having an opening in its wallintermediate the motor and mutller, of a sleeve rotatably fitted on the circumference of said pipe and adapted to close the opening therein, said sleeve having an opening adapted to register with the opening in said pipe and having its longitudinal edges sharpened so as to shave the adjacent face of the pipe, said sleeve also having a transversely extendingslot, a stud secured to said pipe and projecting through the slot in said sleeve so as to hold the latter against end'wise movement and limit the rotary movement thereof, and means for turning the sleeve on the pipe to cover and uncover the opening in thelatter.

2. The combination with the exhaust pipe of an internal combustion motor, said ipe aving an opening in its Wall intermediate the motor and muier,

5 fitted on the circumference of said pipe and adapted to close the opening therein, said sleeve having an opening adapted to regis'ter with the openin in said pipe, the edge of the opening in t e sleeve being adapted to of -a sleeve rotatably shave the adjacent face of the pipe, and

means for turning the sleeve on the plpe to cover and uncover the opening in the latter. Signed at St. Louis, Missouri, this 18th day of April, 1910.

, GEORGE C. WARD.

Gr. A. PENNINGTON, E. L. BENNETT. 

